How severe is CVE-2025-9497?

CVE-2025-9497 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-9497 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-9497?

CVE-2025-9497 affects Microchip Timeprovider 4100 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-9497?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2025-9497 have an EU (EUVD) identifier?

Yes. CVE-2025-9497 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-209112.

When was CVE-2025-9497 published?

CVE-2025-9497 was published on 2026-03-28 and last updated on 2026-08-12.

CVE-2025-9497

CVE-2025-9497 is a critical-severity vulnerability in Microchip Timeprovider 4100 Firmware with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-798.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v4: 5.5
EPSS exploit prediction: 0% (23rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-209112
Weakness: CWE-798
Affected product: Microchip Timeprovider 4100 Firmware
Published: 2026-03-28
Last modified: 2026-08-12

Description

Use of Hard-coded Credentials vulnerability in Microchip Time Provider 4100 allows Malicious Manual Software Update.This issue affects Time Provider 4100: before 2.5.0.

Frequently asked questions

What is CVE-2025-9497?: Use of Hard-coded Credentials vulnerability in Microchip Time Provider 4100 allows Malicious Manual Software Update.This issue affects Time Provider 4100: before 2.5.0.
How severe is CVE-2025-9497?: CVE-2025-9497 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-9497 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-9497?: CVE-2025-9497 affects Microchip Timeprovider 4100 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-9497?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2025-9497 have an EU (EUVD) identifier?: Yes. CVE-2025-9497 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-209112.
When was CVE-2025-9497 published?: CVE-2025-9497 was published on 2026-03-28 and last updated on 2026-08-12.

References

Affected products (1)

cpe:2.3:o:microchip:timeprovider_4100_firmware:*:*:*:*:*:*:*:*

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